Mercurial > octave-nkf
annotate liboctave/file-ops.cc @ 10189:8fa6ce1b21f2
file-ops.cc: don't include statdefs.h
| author | John W. Eaton <jwe@octave.org> |
|---|---|
| date | Fri, 22 Jan 2010 14:46:39 -0500 |
| parents | 0522a65bcd56 |
| children | 4d433bd2d4dc |
| rev | line source |
|---|---|
| 1765 | 1 /* |
| 2 | |
| 7017 | 3 Copyright (C) 1996, 1997, 2000, 2001, 2002, 2003, 2004, 2005, 2006, |
| 8920 | 4 2007, 2008 John W. Eaton |
| 1765 | 5 |
| 6 This file is part of Octave. | |
| 7 | |
| 8 Octave is free software; you can redistribute it and/or modify it | |
| 9 under the terms of the GNU General Public License as published by the | |
| 7016 | 10 Free Software Foundation; either version 3 of the License, or (at your |
| 11 option) any later version. | |
| 1765 | 12 |
| 13 Octave is distributed in the hope that it will be useful, but WITHOUT | |
| 14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 16 for more details. | |
| 17 | |
| 18 You should have received a copy of the GNU General Public License | |
| 7016 | 19 along with Octave; see the file COPYING. If not, see |
| 20 <http://www.gnu.org/licenses/>. | |
| 1765 | 21 |
| 22 */ | |
| 23 | |
| 24 #ifdef HAVE_CONFIG_H | |
| 25 #include <config.h> | |
| 26 #endif | |
| 27 | |
| 28 #include <cerrno> | |
| 1802 | 29 #include <cstdio> |
| 30 #include <cstdlib> | |
| 1765 | 31 #include <cstring> |
| 32 | |
| 3503 | 33 #include <iostream> |
| 4726 | 34 #include <vector> |
| 3040 | 35 |
| 1765 | 36 #include <sys/types.h> |
| 2926 | 37 |
| 10179 | 38 #include <pathmax.h> |
| 1765 | 39 |
| 5476 | 40 #include "dir-ops.h" |
| 1765 | 41 #include "file-ops.h" |
| 5476 | 42 #include "file-stat.h" |
| 2926 | 43 #include "oct-env.h" |
| 2934 | 44 #include "oct-passwd.h" |
| 3710 | 45 #include "pathlen.h" |
| 5476 | 46 #include "quit.h" |
| 2926 | 47 #include "str-vec.h" |
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48 #include "oct-locbuf.h" |
| 1765 | 49 |
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50 file_ops::static_members *file_ops::static_members::instance = 0; |
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51 |
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52 file_ops::static_members::static_members (void) |
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53 : |
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54 #if (defined (OCTAVE_HAVE_WINDOWS_FILESYSTEM) && ! defined (OCTAVE_HAVE_POSIX_FILESYSTEM)) |
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55 xdir_sep_char ('\\'), |
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56 xdir_sep_str ("\\"), |
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57 #else |
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58 xdir_sep_char ('/'), |
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59 xdir_sep_str ("/"), |
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60 #endif |
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61 #if defined (OCTAVE_HAVE_WINDOWS_FILESYSTEM) |
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62 xdir_sep_chars ("/\\") |
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63 #else |
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64 xdir_sep_chars (xdir_sep_str) |
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65 #endif |
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66 { } |
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67 |
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68 bool |
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69 file_ops::static_members::instance_ok (void) |
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70 { |
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71 bool retval = true; |
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72 |
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73 if (! instance) |
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74 instance = new static_members (); |
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75 |
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76 if (! instance) |
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77 { |
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78 (*current_liboctave_error_handler) |
| 10180 | 79 ("unable to create file_ops::static_members object!"); |
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80 |
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81 retval = false; |
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82 } |
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83 |
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84 return retval; |
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85 } |
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86 |
| 2433 | 87 // We provide a replacement for mkdir(). |
| 88 | |
| 1765 | 89 int |
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90 file_ops::mkdir (const std::string& nm, mode_t md) |
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91 { |
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92 std::string msg; |
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93 return mkdir (nm, md, msg); |
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94 } |
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95 |
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96 int |
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97 file_ops::mkdir (const std::string& name, mode_t mode, std::string& msg) |
| 2668 | 98 { |
| 3504 | 99 msg = std::string (); |
| 2668 | 100 |
| 2937 | 101 int status = -1; |
| 102 | |
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103 status = octave_mkdir (name.c_str (), mode); |
| 2668 | 104 |
| 105 if (status < 0) | |
| 3504 | 106 { |
| 107 using namespace std; | |
| 108 msg = ::strerror (errno); | |
| 109 } | |
| 2668 | 110 |
| 111 return status; | |
| 112 } | |
| 113 | |
| 2433 | 114 // I don't know how to emulate this on systems that don't provide it. |
| 115 | |
| 1765 | 116 int |
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117 file_ops::mkfifo (const std::string& nm, mode_t md) |
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118 { |
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119 std::string msg; |
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120 return mkfifo (nm, md, msg); |
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121 } |
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122 |
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123 int |
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124 file_ops::mkfifo (const std::string& name, mode_t mode, std::string& msg) |
| 2668 | 125 { |
| 3504 | 126 msg = std::string (); |
| 2668 | 127 |
| 2937 | 128 int status = -1; |
| 129 | |
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130 // With gnulib we will always have mkfifo, but some systems like MinGW |
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131 // don't have working mkfifo functions. On those systems, mkfifo will |
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132 // always return -1 and set errno. |
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133 |
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134 status = octave_mkfifo (name.c_str (), mode); |
| 2668 | 135 |
| 136 if (status < 0) | |
| 3504 | 137 { |
| 138 using namespace std; | |
| 139 msg = ::strerror (errno); | |
| 140 } | |
| 2668 | 141 |
| 142 return status; | |
| 143 } | |
| 144 | |
| 3710 | 145 // I don't know how to emulate this on systems that don't provide it. |
| 146 | |
| 147 int | |
| 148 file_ops::link (const std::string& old_name, const std::string& new_name) | |
| 149 { | |
| 150 std::string msg; | |
| 151 return link (old_name, new_name, msg); | |
| 152 } | |
| 153 | |
| 154 int | |
| 155 file_ops::link (const std::string& old_name, | |
| 10180 | 156 const std::string& new_name, std::string& msg) |
| 3710 | 157 { |
| 158 msg = std::string (); | |
| 159 | |
| 160 int status = -1; | |
| 161 | |
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162 status = octave_link (old_name.c_str (), new_name.c_str ()); |
| 3710 | 163 |
| 164 if (status < 0) | |
| 165 { | |
| 166 using namespace std; | |
| 167 msg = ::strerror (errno); | |
| 168 } | |
| 169 | |
| 170 return status; | |
| 171 } | |
| 172 | |
| 173 // I don't know how to emulate this on systems that don't provide it. | |
| 174 | |
| 175 int | |
| 176 file_ops::symlink (const std::string& old_name, const std::string& new_name) | |
| 177 { | |
| 178 std::string msg; | |
| 179 return symlink (old_name, new_name, msg); | |
| 180 } | |
| 181 | |
| 182 int | |
| 183 file_ops::symlink (const std::string& old_name, | |
| 10180 | 184 const std::string& new_name, std::string& msg) |
| 3710 | 185 { |
| 186 msg = std::string (); | |
| 187 | |
| 188 int status = -1; | |
| 189 | |
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190 status = octave_symlink (old_name.c_str (), new_name.c_str ()); |
| 3710 | 191 |
| 192 if (status < 0) | |
| 193 { | |
| 194 using namespace std; | |
| 195 msg = ::strerror (errno); | |
| 196 } | |
| 197 | |
| 198 return status; | |
| 199 } | |
| 200 | |
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201 // We provide a replacement for readlink(). |
| 3710 | 202 |
| 203 int | |
| 204 file_ops::readlink (const std::string& path, std::string& result) | |
| 205 { | |
| 206 std::string msg; | |
| 207 return readlink (path, result, msg); | |
| 208 } | |
| 209 | |
| 210 int | |
| 211 file_ops::readlink (const std::string& path, std::string& result, | |
| 10180 | 212 std::string& msg) |
| 3710 | 213 { |
| 214 int status = -1; | |
| 215 | |
| 216 msg = std::string (); | |
| 217 | |
| 218 char buf[MAXPATHLEN+1]; | |
| 219 | |
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220 status = octave_readlink (path.c_str (), buf, MAXPATHLEN); |
| 3710 | 221 |
| 222 if (status < 0) | |
| 223 { | |
| 224 using namespace std; | |
| 225 msg = ::strerror (errno); | |
| 226 } | |
| 227 else | |
| 228 { | |
| 229 buf[status] = '\0'; | |
| 3769 | 230 result = std::string (buf); |
| 3710 | 231 status = 0; |
| 232 } | |
| 233 | |
| 234 return status; | |
| 235 } | |
| 236 | |
| 2433 | 237 // We provide a replacement for rename(). |
| 238 | |
| 1765 | 239 int |
| 3504 | 240 file_ops::rename (const std::string& from, const std::string& to) |
| 1765 | 241 { |
| 3504 | 242 std::string msg; |
| 2937 | 243 return rename (from, to, msg); |
| 1765 | 244 } |
| 245 | |
| 2668 | 246 int |
| 3504 | 247 file_ops::rename (const std::string& from, const std::string& to, |
| 10180 | 248 std::string& msg) |
| 2668 | 249 { |
| 2937 | 250 int status = -1; |
| 251 | |
| 3504 | 252 msg = std::string (); |
| 2668 | 253 |
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254 status = octave_rename (from.c_str (), to.c_str ()); |
| 2668 | 255 |
| 256 if (status < 0) | |
| 3504 | 257 { |
| 258 using namespace std; | |
| 259 msg = ::strerror (errno); | |
| 260 } | |
| 2668 | 261 |
| 262 return status; | |
| 263 } | |
| 264 | |
| 2433 | 265 // We provide a replacement for rmdir(). |
| 266 | |
| 1765 | 267 int |
| 3504 | 268 file_ops::rmdir (const std::string& name) |
| 1765 | 269 { |
| 3504 | 270 std::string msg; |
| 2937 | 271 return rmdir (name, msg); |
| 1765 | 272 } |
| 273 | |
| 2668 | 274 int |
| 3504 | 275 file_ops::rmdir (const std::string& name, std::string& msg) |
| 2668 | 276 { |
| 3504 | 277 msg = std::string (); |
| 2668 | 278 |
| 2937 | 279 int status = -1; |
| 280 | |
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281 status = octave_rmdir (name.c_str ()); |
| 2668 | 282 |
| 283 if (status < 0) | |
| 3504 | 284 { |
| 285 using namespace std; | |
| 286 msg = ::strerror (errno); | |
| 287 } | |
| 2668 | 288 |
| 289 return status; | |
| 290 } | |
| 291 | |
| 5476 | 292 // And a version that works recursively. |
| 293 | |
| 294 int | |
| 295 file_ops::recursive_rmdir (const std::string& name) | |
| 296 { | |
| 297 std::string msg; | |
| 298 return recursive_rmdir (name, msg); | |
| 299 } | |
| 300 | |
| 301 int | |
| 302 file_ops::recursive_rmdir (const std::string& name, std::string& msg) | |
| 303 { | |
| 304 msg = std::string (); | |
| 305 | |
| 306 int status = 0; | |
| 307 | |
| 308 dir_entry dir (name); | |
| 309 | |
| 310 if (dir) | |
| 311 { | |
| 312 string_vector dirlist = dir.read (); | |
| 313 | |
| 314 for (octave_idx_type i = 0; i < dirlist.length (); i++) | |
| 10180 | 315 { |
| 316 octave_quit (); | |
| 5476 | 317 |
| 10180 | 318 std::string nm = dirlist[i]; |
| 5476 | 319 |
| 10180 | 320 // Skip current directory and parent. |
| 321 if (nm == "." || nm == "..") | |
| 322 continue; | |
| 5476 | 323 |
| 10180 | 324 std::string fullnm = name + file_ops::dir_sep_str () + nm; |
| 5476 | 325 |
| 10180 | 326 // Get info about the file. Don't follow links. |
| 327 file_stat fs (fullnm, false); | |
| 5476 | 328 |
| 10180 | 329 if (fs) |
| 330 { | |
| 331 if (fs.is_dir ()) | |
| 332 { | |
| 333 status = recursive_rmdir (fullnm, msg); | |
| 5476 | 334 |
| 10180 | 335 if (status < 0) |
| 336 break; | |
| 337 } | |
| 338 else | |
| 339 { | |
| 340 status = unlink (fullnm, msg); | |
| 5476 | 341 |
| 10180 | 342 if (status < 0) |
| 343 break; | |
| 344 } | |
| 345 } | |
| 346 else | |
| 347 { | |
| 348 msg = fs.error (); | |
| 349 break; | |
| 350 } | |
| 351 } | |
| 5476 | 352 |
| 353 if (status >= 0) | |
| 10180 | 354 { |
| 355 dir.close (); | |
| 356 status = file_ops::rmdir (name, msg); | |
| 357 } | |
| 5476 | 358 } |
| 359 else | |
| 360 { | |
| 361 status = -1; | |
| 362 | |
| 363 msg = dir.error (); | |
| 364 } | |
| 365 | |
| 366 return status; | |
| 367 } | |
| 368 | |
| 5138 | 369 std::string |
| 370 file_ops::canonicalize_file_name (const std::string& name) | |
| 371 { | |
| 372 std::string msg; | |
| 373 return canonicalize_file_name (name, msg); | |
| 374 } | |
| 375 | |
| 376 std::string | |
| 377 file_ops::canonicalize_file_name (const std::string& name, std::string& msg) | |
| 378 { | |
| 379 msg = std::string (); | |
| 380 | |
| 381 std::string retval; | |
| 382 | |
| 383 #if defined (HAVE_CANONICALIZE_FILE_NAME) | |
| 384 | |
| 385 char *tmp = ::canonicalize_file_name (name.c_str ()); | |
| 386 | |
| 387 if (tmp) | |
| 388 { | |
| 389 retval = tmp; | |
| 390 ::free (tmp); | |
| 391 } | |
| 392 | |
| 393 #elif defined (HAVE_RESOLVEPATH) | |
| 394 | |
| 395 #if !defined (errno) | |
| 396 extern int errno; | |
| 397 #endif | |
| 398 | |
| 399 #if !defined (__set_errno) | |
| 400 # define __set_errno(Val) errno = (Val) | |
| 401 #endif | |
| 402 | |
| 403 if (name.empty ()) | |
| 404 { | |
| 405 __set_errno (ENOENT); | |
| 406 return retval; | |
| 407 } | |
| 408 | |
| 409 // All known hosts with resolvepath (e.g. Solaris 7) don't turn | |
| 410 // relative names into absolute ones, so prepend the working | |
| 411 // directory if the path is not absolute. | |
| 412 | |
| 5149 | 413 std::string absolute_name |
| 414 = octave_env::make_absolute (name, octave_env::getcwd ()); | |
| 5138 | 415 |
| 5149 | 416 size_t resolved_size = absolute_name.length (); |
| 5138 | 417 |
| 6208 | 418 while (true) |
| 5138 | 419 { |
| 420 resolved_size = 2 * resolved_size + 1; | |
| 421 | |
| 422 OCTAVE_LOCAL_BUFFER (char, resolved, resolved_size); | |
| 423 | |
| 5149 | 424 int resolved_len |
| 10180 | 425 = ::resolvepath (absolute_name.c_str (), resolved, resolved_size); |
| 5138 | 426 |
| 427 if (resolved_len < 0) | |
| 10180 | 428 break; |
| 5138 | 429 |
| 430 if (resolved_len < resolved_size) | |
| 10180 | 431 { |
| 432 retval = resolved; | |
| 433 break; | |
| 434 } | |
| 5138 | 435 } |
| 436 | |
| 6208 | 437 #elif defined (__WIN32__) |
| 438 | |
| 439 int n = 1024; | |
| 440 | |
| 441 std::string win_path (n, '\0'); | |
| 442 | |
| 443 while (true) | |
| 444 { | |
| 7520 | 445 int status = GetFullPathName (name.c_str (), n, &win_path[0], 0); |
| 6208 | 446 |
| 447 if (status == 0) | |
| 448 break; | |
| 449 else if (status < n) | |
| 450 { | |
| 451 win_path.resize (status); | |
| 10180 | 452 retval = win_path; |
| 453 break; | |
| 6208 | 454 } |
| 455 else | |
| 456 { | |
| 457 n *= 2; | |
| 10180 | 458 win_path.resize (n); |
| 6208 | 459 } |
| 460 } | |
| 461 | |
| 6271 | 462 #elif defined (HAVE_REALPATH) |
| 463 | |
| 464 #if !defined (__set_errno) | |
| 465 # define __set_errno(Val) errno = (Val) | |
| 466 #endif | |
| 467 | |
| 468 if (name.empty ()) | |
| 469 { | |
| 470 __set_errno (ENOENT); | |
| 471 return retval; | |
| 472 } | |
| 473 | |
| 474 OCTAVE_LOCAL_BUFFER (char, buf, PATH_MAX); | |
| 475 | |
| 6273 | 476 if (::realpath (name.c_str (), buf)) |
| 477 retval = buf; | |
| 6271 | 478 |
| 5138 | 479 #else |
| 480 | |
| 5775 | 481 // FIXME -- provide replacement here... |
| 5138 | 482 retval = name; |
| 483 | |
| 484 #endif | |
| 485 | |
| 486 if (retval.empty ()) | |
| 487 { | |
| 488 using namespace std; | |
| 489 msg = ::strerror (errno); | |
| 490 } | |
| 491 | |
| 492 return retval; | |
| 493 } | |
| 494 | |
| 2433 | 495 // We provide a replacement for tempnam(). |
| 496 | |
| 3504 | 497 std::string |
| 498 file_ops::tempnam (const std::string& dir, const std::string& pfx) | |
| 1802 | 499 { |
| 3504 | 500 std::string msg; |
| 2937 | 501 return tempnam (dir, pfx, msg); |
| 502 } | |
| 503 | |
| 3504 | 504 std::string |
| 505 file_ops::tempnam (const std::string& dir, const std::string& pfx, | |
| 10180 | 506 std::string& msg) |
| 2937 | 507 { |
| 3504 | 508 msg = std::string (); |
| 2937 | 509 |
| 3504 | 510 std::string retval; |
| 2937 | 511 |
| 512 const char *pdir = dir.empty () ? 0 : dir.c_str (); | |
| 1802 | 513 |
| 2937 | 514 const char *ppfx = pfx.empty () ? 0 : pfx.c_str (); |
| 515 | |
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516 char *tmp = octave_tempnam (pdir, ppfx); |
| 1802 | 517 |
| 518 if (tmp) | |
| 519 { | |
| 520 retval = tmp; | |
| 521 | |
| 2937 | 522 ::free (tmp); |
| 1802 | 523 } |
| 524 else | |
| 3504 | 525 { |
| 526 using namespace std; | |
| 527 msg = ::strerror (errno); | |
| 528 } | |
| 1802 | 529 |
| 530 return retval; | |
| 531 } | |
| 532 | |
| 3040 | 533 // The following tilde-expansion code was stolen and adapted from |
| 534 // readline. | |
| 2926 | 535 |
| 3040 | 536 // The default value of tilde_additional_prefixes. This is set to |
| 537 // whitespace preceding a tilde so that simple programs which do not | |
| 538 // perform any word separation get desired behaviour. | |
| 539 static const char *default_prefixes[] = { " ~", "\t~", ":~", 0 }; | |
| 540 | |
| 541 // The default value of tilde_additional_suffixes. This is set to | |
| 542 // whitespace or newline so that simple programs which do not perform | |
| 543 // any word separation get desired behaviour. | |
| 544 static const char *default_suffixes[] = { " ", "\n", ":", 0 }; | |
| 545 | |
| 546 // If non-null, this contains the address of a function that the | |
| 547 // application wants called before trying the standard tilde | |
| 548 // expansions. The function is called with the text sans tilde, and | |
| 549 // returns a malloc()'ed string which is the expansion, or a NULL | |
| 550 // pointer if the expansion fails. | |
| 551 file_ops::tilde_expansion_hook file_ops::tilde_expansion_preexpansion_hook = 0; | |
| 552 | |
| 553 // If non-null, this contains the address of a function to call if the | |
| 554 // standard meaning for expanding a tilde fails. The function is | |
| 555 // called with the text (sans tilde, as in "foo"), and returns a | |
| 556 // malloc()'ed string which is the expansion, or a NULL pointer if | |
| 557 // there is no expansion. | |
| 558 file_ops::tilde_expansion_hook file_ops::tilde_expansion_failure_hook = 0; | |
| 559 | |
| 560 // When non-null, this is a NULL terminated array of strings which are | |
| 561 // duplicates for a tilde prefix. Bash uses this to expand `=~' and | |
| 562 // `:~'. | |
| 563 string_vector file_ops::tilde_additional_prefixes = default_prefixes; | |
| 564 | |
| 565 // When non-null, this is a NULL terminated array of strings which | |
| 566 // match the end of a username, instead of just "/". Bash sets this | |
| 567 // to `:' and `=~'. | |
| 568 string_vector file_ops::tilde_additional_suffixes = default_suffixes; | |
| 569 | |
| 570 // Find the start of a tilde expansion in S, and return the index | |
| 571 // of the tilde which starts the expansion. Place the length of the | |
| 572 // text which identified this tilde starter in LEN, excluding the | |
| 573 // tilde itself. | |
| 574 | |
| 575 static size_t | |
| 3504 | 576 tilde_find_prefix (const std::string& s, size_t& len) |
| 3040 | 577 { |
| 578 len = 0; | |
| 579 | |
| 580 size_t s_len = s.length (); | |
| 581 | |
| 582 if (s_len == 0 || s[0] == '~') | |
| 583 return 0; | |
| 584 | |
| 585 string_vector prefixes = file_ops::tilde_additional_prefixes; | |
| 586 | |
| 587 if (! prefixes.empty ()) | |
| 588 { | |
| 589 for (size_t i = 0; i < s_len; i++) | |
| 10180 | 590 { |
| 591 for (int j = 0; j < prefixes.length (); j++) | |
| 592 { | |
| 593 size_t pfx_len = prefixes[j].length (); | |
| 3040 | 594 |
| 10180 | 595 if (prefixes[j].compare (s.substr (i, pfx_len)) == 0) |
| 596 { | |
| 597 len = pfx_len - 1; | |
| 598 return i + len; | |
| 599 } | |
| 600 } | |
| 601 } | |
| 3040 | 602 } |
| 603 | |
| 604 return s_len; | |
| 605 } | |
| 606 | |
| 607 // Find the end of a tilde expansion in S, and return the index | |
| 608 // of the character which ends the tilde definition. | |
| 609 | |
| 610 static size_t | |
| 3504 | 611 tilde_find_suffix (const std::string& s) |
| 3040 | 612 { |
| 613 size_t s_len = s.length (); | |
| 614 | |
| 615 string_vector suffixes = file_ops::tilde_additional_suffixes; | |
| 616 | |
| 617 size_t i = 0; | |
| 618 | |
| 619 for ( ; i < s_len; i++) | |
| 620 { | |
| 6694 | 621 if (file_ops::is_dir_sep (s[i])) |
| 10180 | 622 break; |
| 3040 | 623 |
| 624 if (! suffixes.empty ()) | |
| 10180 | 625 { |
| 626 for (int j = 0; j < suffixes.length (); j++) | |
| 627 { | |
| 628 size_t sfx_len = suffixes[j].length (); | |
| 3040 | 629 |
| 10180 | 630 if (suffixes[j].compare (s.substr (i, sfx_len)) == 0) |
| 631 return i; | |
| 632 } | |
| 633 } | |
| 3040 | 634 } |
| 635 | |
| 636 return i; | |
| 637 } | |
| 638 | |
| 639 // Take FNAME and return the tilde prefix we want expanded. | |
| 640 | |
| 3504 | 641 static std::string |
| 642 isolate_tilde_prefix (const std::string& fname) | |
| 3040 | 643 { |
| 644 size_t f_len = fname.length (); | |
| 645 | |
| 646 size_t len = 1; | |
| 647 | |
| 6694 | 648 while (len < f_len && ! file_ops::is_dir_sep (fname[len])) |
| 3040 | 649 len++; |
| 650 | |
| 651 return fname.substr (1, len); | |
| 652 } | |
| 653 | |
| 654 // Do the work of tilde expansion on FILENAME. FILENAME starts with a | |
| 655 // tilde. | |
| 656 | |
| 3504 | 657 static std::string |
| 658 tilde_expand_word (const std::string& filename) | |
| 3040 | 659 { |
| 660 size_t f_len = filename.length (); | |
| 661 | |
| 662 if (f_len == 0 || filename[0] != '~') | |
| 663 return filename; | |
| 664 | |
| 665 // A leading `~/' or a bare `~' is *always* translated to the value | |
| 666 // of $HOME or the home directory of the current user, regardless of | |
| 667 // any preexpansion hook. | |
| 668 | |
| 6694 | 669 if (f_len == 1 || file_ops::is_dir_sep (filename[1])) |
| 3040 | 670 return octave_env::get_home_directory () + filename.substr (1); |
| 671 | |
| 3504 | 672 std::string username = isolate_tilde_prefix (filename); |
| 3040 | 673 |
| 674 size_t user_len = username.length (); | |
| 675 | |
| 3504 | 676 std::string dirname; |
| 3040 | 677 |
| 678 if (file_ops::tilde_expansion_preexpansion_hook) | |
| 679 { | |
| 3504 | 680 std::string expansion |
| 10180 | 681 = file_ops::tilde_expansion_preexpansion_hook (username); |
| 3040 | 682 |
| 683 if (! expansion.empty ()) | |
| 10180 | 684 return expansion + filename.substr (user_len+1); |
| 3040 | 685 } |
| 686 | |
| 687 // No preexpansion hook, or the preexpansion hook failed. Look in the | |
| 688 // password database. | |
| 689 | |
| 690 octave_passwd pw = octave_passwd::getpwnam (username); | |
| 691 | |
| 692 if (! pw) | |
| 693 { | |
| 694 // If the calling program has a special syntax for expanding tildes, | |
| 695 // and we couldn't find a standard expansion, then let them try. | |
| 696 | |
| 697 if (file_ops::tilde_expansion_failure_hook) | |
| 10180 | 698 { |
| 699 std::string expansion | |
| 700 = file_ops::tilde_expansion_failure_hook (username); | |
| 3040 | 701 |
| 10180 | 702 if (! expansion.empty ()) |
| 703 dirname = expansion + filename.substr (user_len+1); | |
| 704 } | |
| 3040 | 705 |
| 706 // If we don't have a failure hook, or if the failure hook did not | |
| 707 // expand the tilde, return a copy of what we were passed. | |
| 708 | |
| 709 if (dirname.length () == 0) | |
| 10180 | 710 dirname = filename; |
| 3040 | 711 } |
| 712 else | |
| 3074 | 713 dirname = pw.dir () + filename.substr (user_len+1); |
| 3040 | 714 |
| 715 return dirname; | |
| 716 } | |
| 717 | |
| 718 // If NAME has a leading ~ or ~user, Unix-style, expand it to the | |
| 719 // user's home directory. If no ~, or no <pwd.h>, just return NAME. | |
| 720 | |
| 3504 | 721 std::string |
| 722 file_ops::tilde_expand (const std::string& name) | |
| 2926 | 723 { |
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724 if (name.find ('~') == std::string::npos) |
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725 return name; |
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726 else |
| 3040 | 727 { |
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728 std::string result; |
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729 |
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730 size_t name_len = name.length (); |
| 2926 | 731 |
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732 // Scan through S expanding tildes as we come to them. |
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733 |
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734 size_t pos = 0; |
| 3040 | 735 |
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736 while (1) |
| 10180 | 737 { |
| 738 if (pos > name_len) | |
| 739 break; | |
| 3040 | 740 |
| 10180 | 741 size_t len; |
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742 |
| 10180 | 743 // Make START point to the tilde which starts the expansion. |
| 2926 | 744 |
| 10180 | 745 size_t start = tilde_find_prefix (name.substr (pos), len); |
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746 |
| 10180 | 747 result.append (name.substr (pos, start)); |
| 3040 | 748 |
| 10180 | 749 // Advance STRING to the starting tilde. |
| 2926 | 750 |
| 10180 | 751 pos += start; |
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752 |
| 10180 | 753 // Make FINI be the index of one after the last character of the |
| 754 // username. | |
| 2926 | 755 |
| 10180 | 756 size_t fini = tilde_find_suffix (name.substr (pos)); |
| 2926 | 757 |
| 10180 | 758 // If both START and FINI are zero, we are all done. |
| 2926 | 759 |
| 10180 | 760 if (! (start || fini)) |
| 761 break; | |
| 2926 | 762 |
| 10180 | 763 // Expand the entire tilde word, and copy it into RESULT. |
| 2947 | 764 |
| 10180 | 765 std::string tilde_word = name.substr (pos, fini); |
| 3040 | 766 |
| 10180 | 767 pos += fini; |
| 2926 | 768 |
| 10180 | 769 std::string expansion = tilde_expand_word (tilde_word); |
| 3040 | 770 |
| 10180 | 771 result.append (expansion); |
| 772 } | |
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773 |
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774 return result; |
| 2926 | 775 } |
| 776 } | |
| 777 | |
| 778 // A vector version of the above. | |
| 779 | |
| 780 string_vector | |
| 781 file_ops::tilde_expand (const string_vector& names) | |
| 782 { | |
| 783 string_vector retval; | |
| 784 | |
| 785 int n = names.length (); | |
| 786 | |
| 787 retval.resize (n); | |
| 788 | |
| 789 for (int i = 0; i < n; i++) | |
| 790 retval[i] = file_ops::tilde_expand (names[i]); | |
| 791 | |
| 792 return retval; | |
| 793 } | |
| 1802 | 794 |
| 1765 | 795 int |
| 2926 | 796 file_ops::umask (mode_t mode) |
| 1765 | 797 { |
| 10173 | 798 return octave_umask (mode); |
| 1765 | 799 } |
| 800 | |
| 1773 | 801 int |
| 3504 | 802 file_ops::unlink (const std::string& name) |
| 1773 | 803 { |
| 3504 | 804 std::string msg; |
| 2937 | 805 return unlink (name, msg); |
| 1773 | 806 } |
| 807 | |
| 2668 | 808 int |
| 3504 | 809 file_ops::unlink (const std::string& name, std::string& msg) |
| 2668 | 810 { |
| 3504 | 811 msg = std::string (); |
| 2668 | 812 |
| 2937 | 813 int status = -1; |
| 814 | |
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815 status = octave_unlink (name.c_str ()); |
| 2668 | 816 |
| 817 if (status < 0) | |
| 3504 | 818 { |
| 819 using namespace std; | |
| 820 msg = ::strerror (errno); | |
| 821 } | |
| 2668 | 822 |
| 823 return status; | |
| 824 } | |
| 825 | |
| 7272 | 826 std::string |
| 827 file_ops::concat (const std::string& dir, const std::string& file) | |
| 828 { | |
| 829 return dir.empty () | |
| 830 ? file | |
| 831 : (is_dir_sep (dir[dir.length()-1]) | |
| 832 ? dir + file | |
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833 : dir + file_ops::dir_sep_char () + file); |
| 7272 | 834 } |